body {
    margin: 0;
    padding: 0;
}

/* 页面 */
.banner {
    height: 300%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.banner>div {
    width: 60vw;
    height: 100vh;
}

.banner .box1 {
    background-color: lightgreen;
}

.banner .box2 {
    background-color:lightcoral ;
}

.banner .box3 {
    background-color: skyblue;
}

/* 对联 */
.couplet>div {
    width: 20vh;
    position: fixed;
    top: 5vh;
}

.couplet img {
    width: 100%;
}

.adv-left {
    left: 4vh;
}

.adv-right {
    right: 4vh;
}

.couplet button {
    width: 5vh;
    height: 5vh;
    position: absolute;
    font-size: 2vw;
    color: red;
}

/* 弹窗广告 */
.else {
    width: 100%;
    height: 100vh;
    position: fixed;
    overflow: hidden;
}

.bottom {
    width: 13vw;
    position: absolute;
    right: 0;
    bottom: -8vw;
}

.bottom img {
    width: 100%;
}

.bottom button {
    width: 5vh;
    height: 5vh;
    font-size: 2vw;
    color: red;
    position: absolute;
    top: 0;
    right: 0;
}
